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Cornflour and Raisins

Today in science we did two experiments. in the first we mixed cornflour and water to produce a substance that , when you hit it, acted like a solid but flowed like liquid when dropped from a spoon. We dropped raisins into fizzy drink for our second experiment. As the raisins dropped to the bottom of the bottle bubbles gathered on their surface which made the raisins come up to the top of the bottle. At the top the bubbles burst and the raisins went back down again. We watched our 'dancing' raisins.